Mechanical movement.



PATENTED AUG. 8, 1905.

W. G. WINPIELD. MECHANICAL MOVEMENT,

APPLICATION FILED Bil-10.5, 1904.

MIL 11 5.

1 INVENTDR m 0% B ATTYW 1444 ATTEST UNITED STATES PATENT OFFICE.

WVILLIAM O. WINFIELD, OF WARREN, OHIO, ASSIGNOR TO THE WINFIELDMANUFACTURING COMPANY, .OF WARREN, OHIO, A CORPORATION.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed December 5, 1904. Serial No. 235,437.

To a whom, it flea/y concern:

Be it known that I,WILLIAM C.WINFIELD, a citizen of the United States,residing at Warren, in the county of Trumbull and State of Ohio, haveinvented certain new and useful Improvements in Mechanical Movements;and I do declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to mechanical movements; and the object of theinvention is to provide a mechanism whereby a continuous rotary movementof one part is converted into a rotary reciprocating movement of anotherpart, thus adapting said mechanism to washing-macliines,churns,and otherdevices wherein or whereby a given part is rotated in one direction andthen in the opposite direction, and so on alternately and continuously,substantially as shown and described, and particularly pointed out inthe claims.

In the accompanying drawings, Figure 1 is a plan view of my improvedmechanism on line a; m, Fig. 2; and Fig. 2 is a side elevation of saidmechanism on a line corresponding to line y Fig. 3. Fig. 3 is a centralsectional elevation of the mechanism on line .2 2, Fig. 2.

In the foregoing figures the operating parts hold the same relation toeach other in all the views, and, as thus shown, A represents the driveor power shaft, and B the driven shaft, and the mechanism for convertingthe continuous rotary movement of the power or drive shaft A into thereciprocating rotary movement of the driven shaft B is comprised in theyoke O, having a pin-toothed rack D mounted thereon and provided withinternal gear-teeth c in arc arrangement and engaging mutilated gear Eon shaft B. Over or upon rack-teeth D is a segmental channel at, whichis engaged by a depending roller g on an arm Gr, sleeved to rotatefreely about shaft A, on which it is mounted over a sleeve portionprojecting upward from the hub h of pinion H, splined on the lower endof shaft A. However, said arm might be engaged directly upon or aboutshaft A and is free to rotate about its bearing, while gear H is keyedor splined to shaft A, so as to rotate therewith and communicate thepower to rack D.

The inner rack-teeth c are in constant engagement at one point oranother with gear E, and as this gear is fixed upon shaft B power istransmitted to said shaft through the said several interengaging partsfrom drive-shaft A, and said operation is continuous and positive butreciprocal, whereby shaft B is caused to rotate first in one directionand then in the other, and so on, while the operation lasts. Thisreciprocal movement is brought about by the limitations put upon theyoke C and whereby it is permitted. to swing only a limited distance inone direction before it is reversed and caused to swing a like distancein the opposite direction, and this is accompanied by a further swingingof the yoke from one sideto the other of shaft A, as will now be seen.Thus the said yoke has a compound pivot at N, which is equivalent to auniversal joint in.

the bottom of the outer supporting-frame F, and as said yoke is causedto swing edgewise by the leverage applied through gear H on rack D itwill swing in one direction until the end of said rack is reached anddisengagement would occur but for the detention through arm G and itsroller running in walled channel d. These parts prevent disengagementbetween gear H and rack D, or rather maintain engagement when the endofthe rack has been reached, and as pinion H continues to rotate itclimbs around the end of rack D and carries it forcibly to the oppositeside, thus causing yoke O to swing bodily or broadside over to theopposite side relatively to shaft A. Now, however, the teeth of pinion.H are traveling in the opposite direction from that traveled before,and'this causes yoke C to swing edgewise back to the other extreme ofits movement, when it is again reversed and thrown broadside over towhere it was in the first place. and so on, continually. In its travelbroadside from one side to the other the yoke O traverses the mutilatedgear from one end to the other, and the said gear is constructed withone or more continuous arc-shaped teeth 6', on which the shift of theyoke laterally occurs, said gear E being centrally over the pivot-pointof the yoke, as shown. The other teeth 6 of said gear are shortened tothe immediate needs of the work, but might be of full length like, ifpreferred. The lengthwise arc shape of gear E adapts it to the changedpositions of yoke C from one position to the other in respect to shaftA.

The operation of the mechanism will be understood from the foregoingdescription. Shaft A may be rotated by any suitable means,

as by a crank or the like or even by power, This imparts a rotarymovement to gear D and a rocking or edgewise-tilting movement to yoke Gon its pivot n, and as said gear and shaft have a fixed bearing in frameF and the yoke C is operatively tied thereto by arm G it follows thatsaid yoke must move or tilt first in one direction and then in theother, according to its position or relation to gear D. The extent ofits tilting edgewise in either direction is the range of racks D and c,which correspond, and the change from one direction of movement to theother is around the ends of said rack D, as already described. In allthese movements the roller g runs in channel or guideway (Z andmaintains the planetary relationship of the traveling parts. A roller isused to reduce or avoid friction; but other means might be devised forholding the yoke in working relation to or with rack D, and anyequivalent of the mechanism shown for these purposes may be adopted andnot depart from the spirit of the invention.

The several operating parts are shown herein as supported by or upon ametallic frame F; but the style or form of the support may 'vary withthe particular use to which the intop, drive mechanism comprising ashaft and a gear thereon in mesh with one of said racks, a drivenshaftand a gear thereon in mesh with another of said racks, and aloosely-mounted device in continuous engagement with the top of saidyoke and adapted to hold the yoke in operative connection with the drivemechanism, substantially as described.

2. In mechanical movements, a reciprocating yoke having a segmental rackat its top and a guideway above said rack, a drive-shaft and a gearthereon meshing with said rack and a retaining-arm for the yoke havingtraveling engagement with said guideway, substantially as described.

3. In mechanical movements, a variouslypivoted yoke having a rack at itstop and an arc-shaped guideway over said rack, a driveshaft and a gearfixed thereon meshing with said rack and an arm sleeved over said shaftabove said gear and having traveling engagement with said. guideway,substantially as described. v

L. In mechanical movements, a variouslypivoted yoke having a segmentalrack at its top and a channel over said rack, a drive-shaft and a gearthereon engaging said rack and an arm loosely sleeved over said shafthaving a roller running in said channel, substantially as described.

5. In mechanical movements, a driven shaft and a gear mounted thereonhaving teeth parallel to the axis of said shaft, a yoke pivotedcentrally beneath said gear and having an internal rack in mesh withsaid gear, drive mech anism for said yoke and a rotatably-supported partengaging the top of said yoke and having traveling connection therewith,whereby the yoke is held in constant engagement with the drivemechanism, substantially as de-' scribed. V

6. In mechanical movements, a drive-shaft and a driven shaft and gearson said shafts, a pivoted yoke having racks in mesh with said gears andprovided with a walled guideway at its top, and an arm loosely sleevedon the said drive-shaft and having a depending portion engaged in saidguideway.

7. In mechanical movements, a yoke variously pivoted at its bottom andprovided with a set of segmental racks one above the other at its topand having a curved channel over the upper rack, in combination with adriveshaft and a gear fixed thereon engaging said upper rack, an armsupported by said shaft and a roller thereon engaging in said channel,and an arc-shaped gear-wheel engaging the lower of said racks andoverwhich the said yoke is adapted to swing, substantially as described.

In testimony whereof I sign this specification in the presence of twoWitnesses.

WILLIAM C. WINFIELD.

Witnesses:

R. B. MOSER, C. A. SELL.

